How to Use the Correios do Brazil MCP in OpenAI Agents SDK

Plug Correios do Brazil shipping data directly into your OpenAI Agents SDK production pipeline for reliable logistics logic.

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Connect Correios do Brazil MCP to OpenAI Agents SDK

Create your Vinkius account to connect Correios do Brazil to OpenAI Agents SDK and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Correios do Brazil with OpenAI Agents SDK

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Calculate accurate shipping rates in OpenAI Agents SDK

Your agent uses `calculate_prices` to grab real-time shipping costs directly from the postal API. It plugs these numbers into your order processing flow to ensure customers see the right totals immediately. This method keeps your pricing logic synced with actual postal rates. Your agent avoids guesswork by querying the source of truth before finalizing any checkout steps.

Map ZIP codes to physical locations

The `consult_cep` tool lets your agent pull verified address details from any Brazilian ZIP code. It validates user input on the fly, preventing shipping errors before they reach your warehouse. Your production agent relies on this data to populate customer profiles. It turns raw strings into structured location records without extra manual verification steps.

Predict delivery schedules for OpenAI Agents SDK

Use `estimate_delivery_time` to give your users precise arrival dates based on origin and destination ZIP codes. Your agent handles these calculations internally, keeping your shipping estimates honest. This MCP Server provides the raw data your agent needs to manage customer expectations. It cuts down on support tickets by showing accurate timelines during the order process.

Setup guide

Set up Correios do Brazil MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Correios do Brazil tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Correios do Brazil tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Correios do Brazil tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Correios do Brazil Agent",
            instructions="You have access to Correios do Brazil tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about Correios do Brazil MCP in OpenAI Agents SDK

You initialize the server by passing your endpoint to the MCPServerStreamableHttp class. Once connected, your agent discovers all tools automatically, letting you call them within your standard async loops.

Yes. You should set cacheToolsList=True in your server configuration to boost performance. This prevents the agent from re-fetching tool definitions during your production runtime.

You can loop through your data set using the provided tools, but keep an eye on your API rate limits. The SDK handles the requests, but the postal API will throttle you if you hit it too hard.

It doesn't store anything by default. You control the logic in your agent code to decide whether to save or discard the address data returned by the server.

Your agent only transmits ZIP codes to the postal API, which are public-facing geographic identifiers. No personal identifying information like names or house numbers are handled by this server.

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